US4015041A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Upholstery articles and process for their manufacture
Assignee: Industrie Pirelli SpA
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Filing: 1975-05-13
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Granted: 1977-03-29
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Expires: 1995-05-13
Abstract
Abstract A molded cellular polyurethane upholstery article having a flexible inner cellular polyurethane core, a microporous polyurethane skin with predominantly closed cells is provided with a fabric reinforcing material between the skin and core over at least the load bearing portions of the article to improve its resistance to rupture, the fabric being a net having a resistance to perforation as measured by the sphere method, UNI Standard No. 5421-64 of not smaller than 8 kg, and a thickness comprised between 20 and 100 meshes per dm.
Inventors
- 👤 Bruno Koschatzky
- 👤 Attilio Angioletti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:35
CPC Classifications
B; B68; B68G; B68G7/00; B29; B29C; B29C44/00; B29C44/02; B29C44/12; B29C44/14; B29C44/145; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249976; Y10T428/249978; Y10T428/24998; Y10T428/249981; Y10T428/31504; Y10T428/31551; Y10T428/31554; Y10T442/00; Y10T442/10; Y10T442/102; Y10T442/15; Y10T442/164
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
164 words
In a molded cellular polyurethane upholstery article comprising an inner core of flexible cellular polyurethane and a preformed flexible polyurethane skin which is mechanically resistant and which presents an appealing appearance, wherein said skin is microporous and is directly joined to the inner core by a chemical bond, has cells substantially uniformly distributed within its thickness in a fine cellular structure, said cells being predominantly cells which do not communicate with each other, and skin having a density between 0.4 and 0.8 g/cm 3 , the improvement consisting in that at least the useful surface of said skin is internally supported by a piece of net fabric made of fibers selected between natural, artificial and synthetic fibers disposed in the said article between said skin and said inner core, said net fabric having a resistance to perforation as measured by the sphere method, UNI Standard No. 5421-64 of not smaller than 8 kg and a thickness comprised between 20 and 100 meshes per dm.
Claim 2
Dependent Claim
164 words
In a molded cellular polyurethane upholstery article comprising an inner core of flexible cellular polyurethane and a preformed flexible polyurethane skin which is mechanically resistant and which presents an appealing appearance, wherein said skin is microporous and is directly joined to the inner core by a chemical bond, has cells substantially uniformly distributed within its thickness in a fine cellular structure, said cells being predominantly cells which do not communicate with each other, and skin having a density between 0.4 and 0.8 g/cm 3 , the improvement consisting in that at least the useful surface of said skin is internally supported by a piece of net fabric made of fibers selected between natural, artificial and synthetic fibers disposed in the said article between said skin and said inner core, said net fabric having a resistance to perforation as measured by the sphere method, UNI Standard No. 5421-64 of not smaller than 8 kg and a thickness comprised between 20 and 100 meshes per dm.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-03-28 | 1980-09-27 | 1981-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-28 | 1984-09-27 | 1985-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-28 | 1988-09-27 | 1989-03-29 | $7700.00 | Window Closed / Lapsed |